RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-12-11 21:45:16 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Goodbye macro hell, hello nice clean and simple code. This also gives llc

Browse Source 
the ability to dynamically load and use targets that are not linked into it
statically.  e.g.:

  llc -load libparisc.so -march=parisc foo.bc -o foo.s

llvm-svn: 14751
This commit is contained in:
Chris Lattner 2004-07-11 04:03:24 +00:00
parent 6bbbf294d1
commit 0171aec781
1 changed files with 17 additions and 58 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

75
tools/llc/llc.cpp
View File

@ -14,13 +14,14 @@
//===----------------------------------------------------------------------===//
#include "llvm/Bytecode/Reader.h"
#include "llvm/Target/TargetMachineImpls.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetMachineRegistry.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Module.h"
#include "llvm/PassManager.h"
#include "llvm/Pass.h"
#include "Support/CommandLine.h"
#include "Support/PluginLoader.h"
#include "llvm/System/Signals.h"
#include <fstream>
#include <iostream>
@ -40,21 +41,13 @@ OutputFilename("o", cl::desc("Output filename"), cl::value_desc("filename"));
static cl::opt<bool> Force("f", cl::desc("Overwrite output files"));
enum ArchName { noarch, X86, SparcV9, PowerPC, CBackend };
static cl::opt<ArchName>
Arch("march", cl::desc("Architecture to generate assembly for:"), cl::Prefix,
cl::values(clEnumValN(X86, "x86", " IA-32 (Pentium and above)"),
clEnumValN(SparcV9, "sparcv9", " SPARC V9"),
clEnumValN(PowerPC, "powerpc", " PowerPC (experimental)"),
clEnumValN(CBackend, "c", " C backend"),
0),
cl::init(noarch));
static cl::opt<const TargetMachineRegistry::Entry*, false, TargetNameParser>
MArch("march", cl::desc("Architecture to generate assembly for:"));
// GetFileNameRoot - Helper function to get the basename of a filename...
static inline std::string
GetFileNameRoot(const std::string &InputFilename)
{
GetFileNameRoot(const std::string &InputFilename) {
std::string IFN = InputFilename;
std::string outputFilename;
int Len = IFN.length();
@ -86,52 +79,18 @@ int main(int argc, char **argv) {
// explicitly specified an architecture to compile for.
TargetMachine* (*TargetMachineAllocator)(const Module&,
IntrinsicLowering *) = 0;
switch (Arch) {
case CBackend:
TargetMachineAllocator = allocateCTargetMachine;
break;
case X86:
TargetMachineAllocator = allocateX86TargetMachine;
break;
case SparcV9:
TargetMachineAllocator = allocateSparcV9TargetMachine;
break;
case PowerPC:
TargetMachineAllocator = allocatePowerPCTargetMachine;
break;
default:
// Decide what the default target machine should be, by looking at
// the module. This heuristic (ILP32, LE -> IA32; LP64, BE ->
// SPARCV9) is kind of gross, but it will work until we have more
// sophisticated target information to work from.
if (mod.getEndianness() == Module::LittleEndian &&
mod.getPointerSize() == Module::Pointer32) {
TargetMachineAllocator = allocateX86TargetMachine;
} else if (mod.getEndianness() == Module::BigEndian &&
mod.getPointerSize() == Module::Pointer32) {
TargetMachineAllocator = allocatePowerPCTargetMachine;
} else if (mod.getEndianness() == Module::BigEndian &&
mod.getPointerSize() == Module::Pointer64) {
TargetMachineAllocator = allocateSparcV9TargetMachine;
} else {
// If the module is target independent, favor a target which matches the
// current build system.
#if defined(i386) || defined(__i386__) || defined(__x86__)
TargetMachineAllocator = allocateX86TargetMachine;
#elif defined(sparc) || defined(__sparc__) || defined(__sparcv9)
TargetMachineAllocator = allocateSparcV9TargetMachine;
#elif defined(__POWERPC__) || defined(__ppc__) || defined(__APPLE__)
TargetMachineAllocator = allocatePowerPCTargetMachine;
#else
std::cerr << argv[0] << ": module does not specify a target to use. "
<< "You must use the -march option. If no native target is "
<< "available, use -march=c to emit C code.\n";
if (MArch == 0) {
std::string Err;
MArch = TargetMachineRegistry::getClosestStaticTargetForModule(mod, Err);
if (MArch == 0) {
std::cerr << argv[0] << ": error auto-selecting target for module '"
<< Err << "'. Please use the -march option to explicitly "
<< "pick a target.\n";
return 1;
#endif
}
break;
}
}
std::auto_ptr<TargetMachine> target(TargetMachineAllocator(mod, 0));
std::auto_ptr<TargetMachine> target(MArch->CtorFn(mod, 0));
assert(target.get() && "Could not allocate target machine!");
TargetMachine &Target = *target.get();
const TargetData &TD = Target.getTargetData();
@ -169,7 +128,7 @@ int main(int argc, char **argv) {
} else {
OutputFilename = GetFileNameRoot(InputFilename);
if (Arch != CBackend)
if (MArch->Name[0] != 'c' || MArch->Name[1] != 0) // not CBE
OutputFilename += ".s";
else
OutputFilename += ".cbe.c";